adjustable pan hard rod

[philbert]

been told i should fit one of these as my geometry will be off after lifting

how do you work out how much to adjust it?

i know yet another stoopid question :oops:

[V8MoneyPit]

Depends on how much lift you have. Small lifts shouldn't need the longer Panhard rod. I would suggest anything less than a 2" lift should be fine with the standard rod.

The problem is that the rod ends up at an angle with a suspension lift. In doing so it pulls the axle to the right.

[philbert]

at the moment its 2"(my lift that is!)
having probs with the handling maybe i should just slow down or perhaps castor corrected radius arms .

next time its on the ramp i'll have to check everything over.

[Xtremeteam]

IMHO the adjustable arm is prety much a gimick unless you drastically alter the sus setup regularly,ive got a +2 ish lift on my 90 as youve seen & found the faster you go the worse it handles,strangely still selfcentres ok,sometimes has bad bump steer

[chuggaman]

i was just about to ask the same question

the higher you lift the vehicle,,,,,wouldnt the stresses be there

and a longer length needed

i think ill go have a good look at mine


mike

[V8MoneyPit]

The handling issues are more likely related to castor angle. By lifting the vehicle you have reduced the castor which will reduce the self centering action and make it more vague on centre. If you combine this with large offset wheels, you can also get more wandering.

[Range Rover Blues]

It's basic geamotry, from school remember? Assuming the panhard rod starts of leve on a standard car (I think it does) then for every inch of lift you get an angle away from level. The cosine of this angle = the effective lenght of the rod/original length of the rod, ie nearly 1.

If anyone is REALLY bothered I'll measure the rod and do the maths.

[philbert]

didn't pay much attention at school.if you fancy doing the maths then i would be much obliged.

[V8MoneyPit]

For every inch of lift, the axle will only move roughly 0.01" to the left! As the lift gets greater, the greater the movement to the left, but in real life lifts it is about that figure.

[philbert]

well if thats all it moves its not worth worrying about given the vagaries of landrover manufacturing tolerances eh?



 :(biglaugh):  :(biglaugh):  :(biglaugh):

[V8MoneyPit]

:lol:  :lol: Yes indeed. I'd be amazed if the axle position was that consistant leaving the factory!

[muddyweb]

They weren't ;-)

Besides any thing else, you are just moving the 'average' point anyway... suspension is a dynamic calculation, so what is right for you in the vehicle is different when you have a passenger / tank full of fuel / any other random thing you do to the vehicle

[Xtremeteam]

was i right then ??

adjustable arm is prety much a gimick

[Bobtail]

Sounds like it too me :D

saved me a few quid :shock:  :D

[philbert]

should have listened to you first mikee looks like you were right.

[Mace]

Talking of panhard rods, when I changed the bushes on mine I acutally used a spare rod with new bushes instead of rebushing mine. I made sure the rods were the same length but the centre on the bushes were 6 mm out overall because the old bushes were knackered. In other words my new rod was effectively 6mm longer than the old one.

I couldn't work out whether it was the 6mm extra length or just that fact I'd put new bushes in, either way it made a hell of a difference :-)

[V8MoneyPit]

should have listened to you first mikee looks like you were right.

Don't admit that...... it'll just go to his head    :lol:

[Xtremeteam]

should have listened to you first mikee looks like you were right.

<sprays juice all over the screen>

will i be seeing you over the wknd on the mudmaster phil??

[philbert]

naw sorry mate too much to do to the motor and the weekend is the only chance i get just now.

[chuggaman]

just to add something

mine now looks under duress

it is being twisted

mmmmm

mike